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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 2. Отображено 2.
12-03-2008 дата публикации

Method for refining crude ferro nickel produced by lateritic nickel

Номер: CN0101139642A
Автор: WANG LAICUN, WANG WEI, YI SHULI, LAICUN WANG, WEI WANG, SHULI YI
Принадлежит:

The invention provides a refining method for crude ferronickel from red-earth nickel mineral, relates to a refining method for ferronickel, in particular to a method for continuously blowing to remove such foreign matters as sulfur, phosphorus, silicon, and chromium, etc. so as to refine ferronickel, which is characterized in that sodium carbonate or calcium carbonate is added into the rotating and molten crude ferronickel during the refining to have rapid reaction so as to remove the sulfur slag; after removing the slag, quartz flux and calcium oxide is added, oxygen or oxygen-rich air is blown in to remove such foreign matters as phosphorus, silicon, chromium and carbon, etc. and make slag, hence obtain refined ferronickel. The method completes three procedures, namely desulfurization, dephosphorization and blowing, in the same kaldo converter, reduces processes and improves the direct yield of valuable metals. The recovery of nickel is more than 97%, and the quality of refined ferronickel ...

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Номер записи: 1
12-03-2008 дата публикации

Laterite nickel ore leaching method

Номер: CN0101139656A
Автор: LAICUN WANG, SHULI YI, YINGRONG LI, YUPING CHEN, WANG LAICUN, YI SHULI, LI YINGRONG, CHEN YUPING
Принадлежит:

The invention provides a method for leaching red-earth nickel mineral, relates to a method for leaching aetite type red-earth mineral by two sections of pressurizing and leaching processes as well as using humus soil type red-earth nickel mineral to neutralize and leach residual acid in ore pulp and recover valuable metals from the humus soil. The invention is characterized in that the leaching process comprises two sections, in the first section, aetite type red-earth nickel ore pulp is pressurized and leached, then humus soil ore pulp is added to carry out the second section of pressurizing and leaching. The invention can process humus soil rich with magnesium, uses acid-consuming elements in the humus soil to neutralize, pressurize and leach the residual acid in the ore pulp, so as to reduce the neutralizer use in the subsequent process. The neutralized ore pulp is of good settleabiity, and is easy to separate liquid from solid. The method allows high leaching rate of valuable metals ...

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Номер записи: 2